LIFT, page 2

This is the second page of "Lift". As you can see from the black and white drawing that he did for Nimbus, the airships are similar to those. The Lift story is surely earlier than the b/w page, so he took those ideas and added to them for the later work. I am sure he could have told you what all the little gadgets and doohickeys on the outside of the blimps are for. His invented machinery was whimsical but never random.
In the upper left panel on the colored page, the airship at the top right--am I seeing things, or does it look like a toy duck? Seth did think ducks were funny.